rsvp.model
Class EventDB

java.lang.Object
  rsvp.model.EventDB

All Implemented Interfaces:

java.io.Serializable, EventDBInterface

public class EventDB
extends java.lang.Object
implements java.io.Serializable, EventDBInterface

An EventDB models a collection of events. Events are identified by an integer event ID.

Author:

willb

See Also:

Serialized Form

Field Summary

Fields inherited from interface rsvp.model.EventDBInterface

serialVersionUID

Constructor Summary

EventDB()
Creates a new, empty EventDB.

Method Summary

int	addEmptyEvent() Creates a new, empty Event, adds it to this database, and returns its event ID.
EventInterface	getEvent(int id) Returns the event with a given ID.
int	getEventCount() Returns the event count for this database.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EventDB

public EventDB()

Creates a new, empty EventDB.

Method Detail

addEmptyEvent

public int addEmptyEvent()

Description copied from interface: EventDBInterface

Creates a new, empty Event, adds it to this database, and returns its event ID.

Specified by:

addEmptyEvent in interface EventDBInterface

Returns:

the event ID of the newly-added Event.

getEvent

public EventInterface getEvent(int id)

Description copied from interface: EventDBInterface

Returns the event with a given ID. Throws a BogusParameterException if id is an invalid event ID for this database.

Precondition: 0 <= id < this.getEventCount()

Specified by:

getEvent in interface EventDBInterface

Parameters:

id - an integer between 0 (inclusive) and this.getEventCount() (exclusive)

Returns:

getEventCount

public int getEventCount()

Description copied from interface: EventDBInterface

Returns the event count for this database. If this value is greater than one, then the maximum valid event ID is one less than it. (If this value is zero, there are no valid event IDs.)

Specified by:

getEventCount in interface EventDBInterface

Returns:

the event count.